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Power reducing identities
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Additional Resources (if any)

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The Unit Circle: Cosine and Sine (Section 10.2) http://ostts.org/Stitz_Zeager_Precalculus_Book_By_Section_files/10-2.pdf Rate PDF Rate this resource
The Six Circular Functions and Fundamental Identities (Sectioni 10.3) http://ostts.org/Stitz_Zeager_Precalculus_Book_By_Section_files/10-3.pdf Rate PDF Rate this resource